WO2017177684A1 - 一种双人推车 - Google Patents

一种双人推车 Download PDF

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Publication number
WO2017177684A1
WO2017177684A1 PCT/CN2016/107402 CN2016107402W WO2017177684A1 WO 2017177684 A1 WO2017177684 A1 WO 2017177684A1 CN 2016107402 W CN2016107402 W CN 2016107402W WO 2017177684 A1 WO2017177684 A1 WO 2017177684A1
Authority
WO
WIPO (PCT)
Prior art keywords
bracket
link
connecting rod
push rod
wheel bracket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/107402
Other languages
English (en)
French (fr)
Inventor
贺新军
马福生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goodbaby Child Products Co Ltd
Goodbaby Group Corp
Original Assignee
Goodbaby Child Products Co Ltd
Goodbaby Group Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goodbaby Child Products Co Ltd, Goodbaby Group Corp filed Critical Goodbaby Child Products Co Ltd
Priority to EP16898497.9A priority Critical patent/EP3444165B1/en
Priority to JP2019503605A priority patent/JP6739618B2/ja
Priority to US16/092,762 priority patent/US10556611B2/en
Publication of WO2017177684A1 publication Critical patent/WO2017177684A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
    • B62B7/008—Carriages for children; Perambulators, e.g. dolls' perambulators for two or more children
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
    • B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
    • B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
    • B62B7/062—Coupling unit between front wheels, rear wheels and handle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
    • B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
    • B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
    • B62B7/08—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
    • B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
    • B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
    • B62B7/08—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis
    • B62B7/083—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis the wheel axes being moved from each other during folding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
    • B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
    • B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
    • B62B7/08—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis
    • B62B7/086—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis becoming smaller in all three dimensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
    • B62B9/10—Perambulator bodies; Equipment therefor
    • B62B9/102—Perambulator bodies; Equipment therefor characterized by details of the seat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
    • B62B9/20—Handle bars; Handles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2202/00—Indexing codes relating to type or characteristics of transported articles
    • B62B2202/42—Persons or animals, dead or alive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
    • B62B2205/02—Hand-propelled vehicles or sledges being foldable or dismountable when not in use foldable widthwise
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
    • B62B2205/04—Hand-propelled vehicles or sledges being foldable or dismountable when not in use box-shaped in folded position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
    • B62B2205/06—Foldable with a scissor-like mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
    • B62B2205/12—Collapsible wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
    • B62B2205/20—Catches; Locking or releasing an articulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
    • B62B2205/26—Arrangements for standing up in folded position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
    • B62B9/24—Safety guards for children, e.g. harness
    • B62B9/245—Removable front guards, e.g. with a tray

Definitions

  • the invention relates to a double stroller.
  • a double cart in the prior art comprising a cart frame having an unfolded position and a folded position, a front wheel assembly and a rear wheel assembly disposed at a lower portion of the cart frame, and a cart disposed on the cart
  • the existing double cart has a wide variety of cart frames, the number of rods of the cart frame is different, the connection relationship and the connection position of the rods are different, and the folding principle and the folding manner are different. Due to the structure limitation of the existing cart frame, the folding of the current double cart is partially folded, and the folded double stroller has a structure that is not compact enough, takes up a large space, and is not easy to carry and transport.
  • the technical problem to be solved by the present invention is to provide a double cart with simple structure, convenient folding and small volume after folding.
  • a technical solution adopted by the present invention is: a double cart comprising a frame having an unfolded state and a folded state, a front wheel disposed at a front portion of the lower portion of the frame, and being disposed under the frame The rear wheel of the portion and the locking device for locking the frame in the unfolded state.
  • the frame comprises a side bracket and a horizontal bracket.
  • the side bracket has three and is arranged side by side.
  • the two adjacent side brackets are connected to each other by a cross bracket, and the horizontal bracket comprises a plurality of laterally disposed connecting rods.
  • the connecting rod assembly comprises an outer connecting rod fixedly connected with the side bracket on one side of the double cart and an inner connecting rod fixedly connected with the side bracket in the middle of the double cart, and the outer connecting rod is rotatably connected with the inner connecting rod, the outer connecting rod
  • the connecting rod and the inner connecting rod can be unfolded and folded when the horizontal bracket is deployed / When folded, the outer link of the connecting rod assembly is laterally turned and rotated at a rotational connection with the inner link, and the side brackets on both sides of the double cart are moved away from/close to the double cart with the rotation of the outer link
  • the direction of the middle side bracket is folded and unfolded / Collapse, when the horizontal bracket is in the unfolded state, the side bracket can be unfolded and folded along the side plane where it is located, and any one of the three side brackets can be unfolded/folded, and the other two side brackets can be driven together by the horizontal bracket Expand / Fold.
  • the side bracket includes a front wheel bracket connected to the front wheel at the lower portion, a rear wheel bracket connected to the lower and rear wheels, a side armrest, a first link, a second link and a push rod assembly, and the front wheel bracket
  • the upper portion is rotatably coupled to the upper portion of the rear wheel bracket
  • the push rod assembly is coupled to the rear wheel bracket via a first link
  • the first link is rotatably coupled to the rear wheel bracket and the push rod assembly, respectively Rotatingly coupled to the rear wheel bracket and the push rod assembly
  • the second link is rotatably coupled to the front wheel bracket and the first link, respectively
  • the side armrest, the push rod assembly, the first link and the rear wheel bracket form a fourth a link mechanism
  • the front wheel bracket, the rear wheel bracket, the first link and the second link form another four-bar linkage mechanism, and when the side bracket is in an unfolded state, the front wheel bracket and the rear wheel bracket are mutually supported and supported,
  • the front wheel bracket passes through the front wheel support ground
  • the push rod assembly includes a lower push rod that is rotatably connected to the first link at the lower portion and an upper push rod that is slidably coupled to the lower push rod, and the upper push rod is slidable up and down along the length direction of the lower push rod.
  • one of the upper push rod and the lower push rod is a tubular structure, and the other member is inserted into a member of the tubular structure, and the upper push rod and the lower push rod are slidable relative to each other.
  • an upper portion of the first link is rotatably coupled to a lower portion of the push rod assembly, and an upper portion of the side arm member is rotatably coupled to the push rod assembly, and a joint of the side arm portion on the push rod assembly is higher than the first joint a joint of the rod on the push rod assembly, a lower portion of the side armrest being rotatably coupled to an upper portion of the rear wheel bracket, the first link being rotatably coupled to the rear wheel bracket near the lower end, and the side armrest being on the rear wheel bracket
  • the joint is higher than the joint of the front wheel bracket on the rear wheel bracket and the joint of the first link on the rear wheel bracket.
  • the front wheel bracket rotates backward to be close to the rear wheel bracket, and the push rod assembly rotates forward to abut the side armrest, and the side armrest rotates downward to be close to the rear wheel bracket.
  • the rear wheel bracket comprises an upper rear bracket and a lower rear bracket, and a lower portion of the upper rear bracket is rotatably connected with an upper portion of the lower rear bracket, and the front wheel bracket, the first connecting rod and the side armrest are respectively connected to the upper rear
  • the bracket is rotatably connected, and the rear wheel is mounted on a lower portion of the lower rear bracket.
  • the side bracket has two folding manners, and when the side bracket is folded in the first folding manner, the upper rear bracket and the lower rear bracket are relatively unfolded, and the upper rear bracket and the lower rear bracket are opposite each other.
  • the front wheel bracket, the side armrest, and the first link rotate, and after folding, the front wheel is located at an upper portion of the rear wheel; when the side bracket is folded according to the second folding manner, the lower rear bracket and the upper rear bracket are mutually released Locking, the lower rear bracket rotates upwardly around the joint with the upper rear bracket to fold up and closes with the upper rear bracket, and the upper rear bracket and the lower rear bracket rotate together with respect to the front wheel bracket, the side armrest, and the first link, and are folded Thereafter, the front wheel is located at a lower portion of the rear wheel.
  • the plurality of connecting rod assemblies include a front wheel bracket connecting rod assembly, a rear wheel bracket connecting rod assembly and a push rod connecting rod assembly
  • the front wheel bracket connecting rod assembly includes a front wheel bracket on a side of the double cart a first outer connecting rod fixedly connected, a first inner connecting rod fixedly connected with a front wheel bracket intermediate the double cart, the first outer connecting rod being rotatably connected with the first inner connecting rod
  • the rear wheel bracket connecting rod The assembly includes a second outer link fixedly coupled to the rear wheel bracket on one side of the double cart and a second inner link fixedly coupled to the rear wheel bracket intermediate the double cart, the second outer link and the second inner a link connecting rod assembly
  • the push rod connecting rod assembly comprises a third outer connecting rod fixedly connected with the push rod assembly on one side of the double cart and a third inner connecting rod fixedly connected with the push rod assembly in the middle of the double cart;
  • the third outer connecting rod is rotatably connected with the third inner connecting rod, and the first outer connecting rod, the second outer connecting rod and the
  • the shaft axis of the rotating shaft of the first outer connecting rod and the first inner connecting rod, and the rotating shaft axial line of the second outer connecting rod and the second inner connecting rod rotating connection The shaft axis of the shaft at the rotational connection of the third outer link and the third inner link is collinear or parallel.
  • the first outer link and / Or the first inner connecting rod is provided with a first one-way rotation limiting mechanism for restricting one-way rotation of the first outer connecting rod with respect to the first inner connecting rod when the frame is deployed;
  • the second outer connecting rod and Or the second inner connecting rod is provided with a second one-way rotation limiting mechanism for restricting one-way rotation of the second outer connecting rod with respect to the second inner connecting rod when the frame is deployed;
  • the third outer connecting rod and Or the third inner connecting rod is provided with a third one-way rotation limiting mechanism for restricting one-way rotation of the third outer connecting rod with respect to the third inner connecting rod when the frame is deployed.
  • the cross bracket further includes a connecting rod assembly of the connecting rod
  • the connecting rod assembly of the connecting rod includes a fourth outer connecting rod fixedly connected with the first connecting rod on one side of the double cart, and the middle double connecting cart a fourth inner connecting rod fixedly connected to the first connecting rod
  • the fourth outer connecting rod is rotatably connected with the fourth inner connecting rod, and when the horizontal bracket is in the folded state, the first outer connecting rod and the first inner connecting rod rotate a shaft axis of the joint, a shaft axis of the second outer link and the second inner link rotation joint, a shaft axis of the third outer link and the third inner link rotation joint, and a fourth The axis of the shaft of the rotating joint of the outer link and the fourth inner link is collinear or parallel.
  • the fourth outer link and / Or the fourth inner connecting rod is provided with a fourth one-way rotation limiting mechanism for restricting one-way rotation of the fourth outer connecting rod relative to the fourth inner connecting rod when the frame is deployed.
  • the side brackets are folded together along their own planes, and after the side brackets are folded, the side brackets located on both sides of the double cart are rotated from the outer connecting rod and the inner connecting rod.
  • the joint is folded toward the inside of the front side of the frame.
  • the plane of the front and rear wheels on the side brackets on both sides of the double cart intersects the plane where the front and rear wheels of the middle side bracket of the double cart are located.
  • a front armrest is detachably mounted between adjacent side brackets, and the front armrest is U In the shape of a rod, one end of the front armrest is connected to the side armrest on one side of the double cart, and the other end is connected to the side armrest in the middle of the double cart.
  • the double stroller further comprises a handle fixedly disposed on the side bracket in the middle of the double cart, the handle being located between the front wheel bracket and the side armrest of the side bracket in the middle of the double cart.
  • the handle is annular, and the inner hole of the handle extends in the left-right direction of the double cart.
  • the present invention has the following advantages compared with the prior art: the three side frames of the same structure and side by side can be synchronously folded by the connecting rod assembly, and the folding process is unified; the outer connecting rod and the inner body are connected by rotation
  • the connecting rod can fold the side brackets on both sides together with the lateral folding of the outer connecting rod to fold toward the middle side bracket, so that the folded double cart can reduce the space occupied by the lateral direction, and the folding of the three side brackets can
  • the double stroller of the folded double stroller is relatively small in the front-rear direction and the up-and-down direction, and the folded double stroller has a small overall size; the side armrest of the side bracket, the push rod assembly, and the first joint
  • the four-bar linkage formed by the rod and the rear wheel bracket and the front wheel bracket, the rear wheel bracket, the first link and the second link form a four-bar linkage mechanism, so that when the side bracket is folded, only one component is required to be moved.
  • the linkage of other components is
  • FIG. 1 is a schematic perspective view showing the double stroller of the present invention in an unfolded state
  • FIG 2 is another perspective structural view of the double stroller in an unfolded state according to the present invention.
  • Figure 3 is a side view of the double stroller of the present invention in an unfolded state
  • Figure 4 is a perspective view showing the three-dimensional structure of the side bracket of the double stroller of the present invention (the lower rear bracket is not folded);
  • Figure 5 is a side view of the side stand of the double stroller of the present invention when folded (the lower rear stand is not folded);
  • Figure 6 is a perspective view showing the three-dimensional structure when the side bracket of the double stroller of the present invention is folded (the lower rear bracket is not folded);
  • Figure 7 is a side view of the double bracket of the present invention when the side bracket is folded (the lower rear bracket is not folded);
  • Figure 8 is a front view of the double stroller in the folded state of the present invention (the lower rear bracket is not folded);
  • Figure 9 is a perspective view showing the three-dimensional structure of the double stroller in a folded state according to the present invention (the lower rear bracket is not folded);
  • Figure 10 is a perspective view showing the three-dimensional structure of the side bracket of the double stroller of the present invention (the lower rear bracket is folded);
  • Figure 11 is a side view of the side stand of the double stroller of the present invention when folded (the lower rear stand is folded);
  • Figure 12 is a perspective view showing the three-dimensional structure when the side bracket of the double stroller of the present invention is folded (the lower rear bracket is folded);
  • Figure 13 is a side view (folding of the lower rear bracket) when the side bracket of the double stroller of the present invention is folded;
  • Figure 14 is a front view of the double stroller in the folded state of the present invention (the lower rear bracket is folded);
  • Figure 15 is a perspective view showing the three-dimensional structure of the double stroller in the folded state (the lower rear bracket is folded);
  • the left and right direction corresponds to FIG.
  • the direction perpendicular to the paper surface corresponds to the up and down direction of the paper surface in Fig. 3
  • the front and rear direction corresponds to Fig. 3
  • the left and right direction of the middle paper surface is in the side close to the side of the side bracket located in the middle, and is away from the side of the side bracket located in the middle.
  • a double stroller includes a frame having an unfolded state and a folded state, a front wheel 7 disposed at a front portion of the lower portion of the frame, and a rear wheel disposed at a rear portion below the frame 8 a locking device for locking the frame in an unfolded state and a seat (not shown) provided on the frame.
  • the seat is mainly composed of a cloth cover.
  • the frame includes three side brackets 100 and two cross brackets 200.
  • the side bracket 100 Arranged side by side in the left-right direction, the adjacent two side brackets 100 are connected to each other by the cross bracket 200.
  • the horizontal bracket 200 A plurality of laterally disposed connecting rod assemblies are included.
  • the connecting rod assembly includes an outer link fixedly coupled to the side bracket 100 on one side of the double cart and a side bracket 100 intermediate the double cart. Fixed connection inner link.
  • the outer link is horizontally rotatably coupled to the inner link via a rotating shaft, and the axis of the rotating shaft extends in the up and down direction.
  • Each cross bracket 200 includes at least two connecting rod assemblies, and when the side bracket 100 After the folding in the up-and-down direction and the front-rear direction is completed, the rotational joints of the outer links and the inner links of the same cross bracket 200 are perpendicular to the direction in which the connecting rod assembly extends (as shown in FIG. 6 In the up and down direction in the middle).
  • the outer link and the inner link can be unfolded and folded so that the side brackets (100) on the left and right sides can rotate inwardly with the outer link and the side bracket (100)
  • the two side brackets (100) can be unfolded or folded synchronously with the lateral brackets (200) when the three side brackets (100) are unfolded or folded.
  • the cross bracket 200 When the cross bracket 200 is expanded / When folded, the outer link of the connecting rod assembly is laterally turned and rotated at a rotational connection with the inner link, and the side bracket 100 on both sides of the double cart is moved away from/close to the double cart with the rotation of the outer link. Intermediate side bracket 100 The direction of the fold is unfolded/collapsed.
  • the side bracket 100 When the cross bracket 200 is in the unfolded state, the side bracket 100 can be unfolded and folded along the side plane in which it is located, and any one of the three side brackets 100 is deployed / Folded, the other two side brackets 100 can be unfolded/folded together with the lateral bracket 200.
  • the side bracket 100 When the frame is folded, the side bracket 100 first follows its own plane (up and down direction and front and rear direction) Fold together and close together. After the side brackets 100 are folded, the side brackets 100 on both sides of the double cart are 100 The folding of the frame (left and right direction) is achieved by folding the inside of the front side of the frame from the rotational joint of the outer link and the inner link. When the frame is folded, the side brackets on both sides of the double cart 100 The plane of the upper and lower wheels on the upper side intersects with the plane of the front and rear wheels of the intermediate side bracket 100 of the double cart. In actual use, the above two intersecting planes are nearly perpendicularly intersected.
  • the side bracket 100 includes a front wheel bracket 1 connected to the front wheel 7 at the lower portion, and a rear wheel bracket connected to the rear wheel 8 at the lower portion. 2, side armrest 3, first link 4, second link 5 and push rod assembly 6 .
  • the upper portion of the front wheel bracket 1 is rotatably coupled to the upper portion of the rear wheel bracket 2, and the lower push rod 62 passes through the first link 4 and the rear wheel bracket 2 Connected.
  • the first link 4 is rotatably coupled to a lower portion of the lower push rod 62, and the first link 4 is rotatably coupled to the rear wheel bracket 2 at a lower end.
  • the side armrest 3 upper and lower push rods 62 Rotating the connection, the joint of the side armrest 3 on the lower push rod 62 is higher than the joint of the first link 4 on the lower push rod 62.
  • the lower portion of the side armrest 3 is rotatably coupled to the upper portion of the rear wheel bracket 2.
  • the joint on the rear wheel bracket 2 is higher than the joint of the front wheel bracket 1 on the rear wheel bracket 2 and the joint of the first link 4 on the rear wheel bracket 2.
  • the second link 5 and the front wheel bracket 1 It is rotatably coupled to the lower portion of the first link 4.
  • the side armrest 3, the lower push rod 62, the first link 4 and the rear wheel bracket 2 form a four-bar linkage.
  • the first link 4 and the second link 5 form another four-bar linkage.
  • the pusher assembly 6 includes a lower push rod 62 that is rotatably coupled to the first link 4 and an upper push rod 61 that is slidably coupled to the lower push rod 62.
  • the upper push rod 61 is slidable up and down along the length of the lower push rod 62.
  • the upper push rod 61 and the lower push rod 62 One of the components is a tubular structure, and the other component is inserted into a component of the tubular structure, and the upper push rod 61 and the lower push rod 62 are slidable relative to each other.
  • the lower push rod 62 For the tube structure, the upper push rod 61 is inserted into the lower push rod 62 from the upper opening of the lower push rod 62, and the upper push rod 61 can slide up and down relative to the lower push rod 62.
  • the front wheel bracket 1 and the rear wheel bracket 2 are mutually supported, and the front wheel bracket 1 passes through the front wheel 7 Supporting the ground, the rear wheel bracket 2 is supported by the rear wheel 8, the side armrest 3 and the first connecting rod 4 are respectively inclined on the rear wheel bracket 2, and the push rod assembly 6 is supported on the side armrest 3 and the first Connecting rod 4
  • the upper part, the front wheel bracket 1, the rear wheel bracket 2, the side armrest 3, the push rod assembly 6, the first link 4 and the second link 5 have only two connected components locked by the locking device ; when the side bracket 100 is in a folded state, the locking device is unlocked, the front wheel bracket 1 , the rear wheel bracket 2 , the side armrest 3 , the push rod assembly 6 , the first link 4 and the second link 5 They are all close together and folded together.
  • the plurality of connecting rod assemblies include a front wheel bracket connecting rod assembly, a rear wheel bracket connecting rod assembly, and a push rod connecting rod assembly.
  • the front wheel bracket connecting rod assembly includes a front wheel bracket 1 on a side of a double cart 1 a first outer connecting rod 201 fixedly connected, a first inner connecting rod 202 fixedly connected to the front wheel bracket 1 in the middle of the double cart, the first outer connecting rod 201 and the first inner connecting rod 202 Rotating connection;
  • the rear wheel bracket connecting rod assembly includes a second outer link 203 fixedly coupled to the rear wheel bracket 2 on one side of the double cart and a second inner joint fixedly coupled to the rear wheel bracket 2 in the middle of the double cart Rod 204
  • the second outer link 203 is rotatably coupled to the second inner link 204;
  • the push rod connecting rod assembly includes a third outer link 205 fixedly coupled to the push rod assembly 6 on the side of the double cart.
  • a third inner connecting rod 206 fixedly connected with the push rod assembly 6 in the middle of the double cart the third outer connecting rod 205 is rotatably connected with the third inner connecting rod 206, when the first outer connecting rod 201, the second outer link
  • the side brackets 100 on both sides of the double cart can follow the first outer link 201.
  • the second outer link 203 and the third outer link 205 are folded together to fold/fold in a direction toward/away from the intermediate side bracket 100 of the double cart.
  • the first outer link 201 and the first inner link 202 The shaft shaft line at the rotation joint, the shaft shaft line at the rotation joint of the second outer link 203 and the second inner link 204, and the third outer link 205 and the third inner link 206
  • the shaft axis of the rotating joint is parallel, of course, the better setting is the shaft axis of the first outer connecting rod 201 and the first inner connecting rod 202, the second outer connecting rod 203 and the second inner connecting rod.
  • the shaft axis of the rotary joint is collinear with the shaft axis of the third outer link 205 and the third inner link 206 at the rotational joint. This will cause the side brackets 100 on both sides of the double cart to be opposite to the horizontal brackets after the frame is folded. 200 better closer.
  • the horizontal bracket 200 Also included is a connecting rod assembly of a connecting rod, the connecting rod assembly of the connecting rod includes a fourth outer link 207 fixedly coupled to the first link 4 on one side of the double cart, and a first link intermediate the double cart 4 A fourth inner link 208 that is fixedly coupled, the fourth outer link 207 is rotatably coupled to the fourth inner link 208, and when the frame is in the folded state, the first outer link 201 and the first inner link 202
  • the shaft axis of the rotary joint and the shaft axis of the fourth outer link 207 and the fourth inner link 208 at the rotational joint are collinear or parallel.
  • Each connecting rod assembly also includes an outer connecting rod and / Or a rotation limiting mechanism on the inner connecting rod for rotating the outer connecting rod in only one direction when folded, and when the side bracket is folded in the up and down direction and the front and rear direction, all the outer connecting rods are only It can be rotated to the front of the inner link or can only be rotated to the rear of the inner link.
  • the first outer link 201 rear side portion and/or first inner link 202 rear side portion is provided with a restriction first outer link 201 opposite to the first inner link 202 A first one-way rotation limiting mechanism that unidirectionally rotates when the frame is deployed.
  • the rear side of the second outer link 203 and/or the rear side of the second inner link 204 are provided with a second outer link 203 opposite to the second inner link. 204 A second one-way rotation limiting mechanism that unidirectionally rotates when the frame is deployed.
  • a third outer link 205 is disposed on the rear side of the third outer link 205 and/or the rear side of the third inner link 206.
  • a third one-way rotation limiting mechanism that is unidirectionally rotated relative to the third inner link 206 when the frame is deployed.
  • the fourth outer link 207 is provided with a fourth outer link on the rear side portion of the rear side portion and/or the fourth inner connecting rod 208 207 relative to the fourth inner link 208
  • a fourth one-way rotation limiting mechanism that unidirectionally rotates when the frame is deployed.
  • the specific structure of each of the foregoing one-way rotation limiting mechanisms is not the gist of the present invention, as long as the first one-way rotation limiting mechanism is taken as an example, when the frame is in the unfolded state, the first external connecting rod 201
  • the first inner connecting rod 202 can only rotate in one direction, but cannot rotate in the other direction, and is limited to death.
  • the end portion is provided with a convex portion, and when the frame is in the unfolded state, the first outer link 201 is pressed against the convex portion of the end portion of the first inner link 202.
  • a front armrest 9 is detachably mounted between adjacent side brackets 100, and the front armrest 9 is U.
  • one end of the front armrest 9 is connected to the side armrest 3 on the side of the double cart, and the other end is connected to the side armrest 3 in the middle of the double cart. Before folding the frame, you need to remove the front armrest 9 first.
  • the rear wheel bracket 2 includes an upper rear bracket 21 and a lower rear bracket 22, and a lower portion of the upper rear bracket 21 and a lower rear bracket 22
  • the upper wheel bracket 1, the first link 4 and the side armrest 3 are respectively rotatably coupled to the upper rear bracket 21, and the rear wheel 8 is mounted at a lower portion of the lower rear bracket 22.
  • the locking device When the frame is folded, the locking device is unlocked, the side bracket 100 is folded first, and the side bracket 100 is folded after the horizontal bracket 200 is completed. Fold again.
  • the side bracket 100 has two folding manners, and when the side bracket 100 is folded in the first folding manner, the upper rear bracket 21 and the lower rear bracket 22 are relatively unfolded and locked.
  • the push rod 61 The lower push rod 62 is slidably contracted, the front wheel bracket 1 is rotated backward to be in close contact with the rear wheel bracket 2, and the push rod assembly 6 is rotated forwardly to the side armrest 3, and the side armrest 3 is rotated downward and rearward. Wheel bracket 2 Close together.
  • the arrangement of the two four-bar linkages realizes the linkage of the components of the side bracket 100, and the folding process is simple and convenient. After folding, the front wheel 7 is located at the rear wheel 8 The upper part.
  • the folding of the side bracket 100 realizes a reduction in the volume of the double cart in the up and down and front and rear directions after the folding of the frame, and the structure is compact.
  • One of the folding methods is to fold the side bracket 100 and then the horizontal bracket 200. Folding.
  • the first outer link 201, the second outer link 203, the third outer link 205, and the fourth outer link 207 are brought together toward the intermediate side bracket 100 of the double cart.
  • the direction is folded and folded.
  • the side brackets 100 on both sides are folded 90° with respect to the transverse bracket 200, and are brought closer to the middle side bracket 100, and finally the entire folding of the frame is completed.
  • Cross bracket 200 The folding realizes the reduction of the volume in the left and right direction after the frame is folded, and the structure is more compact.
  • the double cart further includes a handle 10 fixed to the side bracket 100 disposed in the middle of the double cart, the handle 10 Located between the front wheel bracket 1 and the side armrest 3 of the side bracket 100 in the middle of the double stroller.
  • the handle 10 is in a ring shape, and the handle 10 The inner hole extends in the left and right direction of the double cart. In this way, after the frame of the double cart is folded, the user can pick up the handle 10 and pick up the double stroller for carrying and handling.

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Abstract

本发明涉及一种双人推车，其车架包括侧支架（100）和横支架（200），侧支架（100）具有三个且依次并排设置，相邻的两个侧支架（100）之间通过横支架（200）相互连接，横支架（200）包括多个横向设置的连接杆组件，连接杆组件包括与双人推车一侧的侧支架（100）固定连接的外连杆（201，203，205，207）和与双人推车中间的侧支架（100）固定连接的内连杆（202，204，206，208），外连杆可水平转动地连接于内连杆而使左右两侧的侧支架（100）可随外连杆向内转动与中间的侧支架（100）靠拢或向外转动展开且当三个侧支架（100）中的任意一个展开或折叠时另外两个侧支架（100）能够在横支架（200）的带动下同步展开或折叠。通过可水平转动地连接的外连杆和内连杆能够使两侧的侧支架（100）随外连杆的横向翻折收拢，这样，折叠后的双人推车在左右方向上占用的空间缩小。

Description

一种双人推车
技术领域
本发明涉及一种双人推车。
背景技术
现有技术中的一种双人推车，包括具有展开位置与折叠位置的推车车架、设置于所述的推车车架下部的前轮组件与后轮组件、设置于所述的推车车架上的能够支撑人体的人体支撑装置、用于将所述的推车车架锁定于展开位置下的锁定装置。现有的双人推车的推车车架的种类繁多，推车车架的杆件的数目不同，各杆件之间连接关系、连接位置不同，从而折叠原理与折叠方式各不相同。受现有推车车架的结构限制，目前的双人推车的折叠均为部分折叠，折叠后的双人推车的结构不够紧凑，占用空间大，不易携带和运输。
发明内容
本发明要解决的技术问题是提供一种结构简单、折叠方便和折叠后体积小的双人推车。
为了解决上述技术问题，本发明采用的一种技术方案是：一种双人推车，包括具有展开状态和折叠状态的车架、设置在车架下方前部的前轮、设置在车架下方后部的后轮和用于将车架锁定在展开状态的锁定装置。所述车架包括侧支架和横支架，所述侧支架具有三个且依次并排设置，相邻的两个侧支架之间通过横支架相互连接，所述横支架包括多个横向设置的连接杆组件，连接杆组件包括与双人推车一侧的侧支架固定连接的外连杆和与双人推车中间的侧支架固定连接的内连杆，外连杆与内连杆转动连接，所述外连杆和所述内连杆能够展开和折叠，当横支架展开 / 折叠时，所述连接杆组件的外连杆在与内连杆的转动连接处横向翻折转动，位于双人推车两侧的侧支架随外连杆的转动向远离 / 靠近双人推车的中间侧支架的方向翻折展开 / 收拢，当横支架处于展开状态，所述侧支架能够沿自身所在的侧平面展开和折叠，三个侧支架中的任意一个展开 / 折叠，另外两个侧支架能够在横支架的带动下一起展开 / 折叠。
进一步的，所述侧支架包括下部与前轮连接的前轮支架、下部与后轮连接的后轮支架、侧扶手、第一连杆、第二连杆和推杆组件，所述前轮支架的上部与后轮支架的上部转动连接，所述推杆组件通过第一连杆与后轮支架连接，所述第一连杆分别与后轮支架和推杆组件转动连接，所述侧扶手分别与后轮支架和推杆组件转动连接，所述第二连杆分别与前轮支架和第一连杆转动连接，所述侧扶手、推杆组件、第一连杆和后轮支架形成一个四连杆机构，所述前轮支架、后轮支架、第一连杆和第二连杆形成另一个四连杆机构，当侧支架处于展开状态时，前轮支架与后轮支架相互展开支撑，前轮支架通过前轮撑地，后轮支架通过后轮撑地，所述侧扶手和第一连杆分别斜立在后轮支架上，所述推杆组件撑立在侧扶手和第一连杆的上部，所述前轮支架、后轮支架、侧扶手、推杆组件、第一连杆和第二连杆中有且仅有两个相连的部件通过锁定装置相互锁定；当侧支架处于折叠状态，所述锁定装置解锁，所述前轮支架、后轮支架、侧扶手、推杆组件、第一连杆和第二连杆均相互靠拢收折在一起；当侧支架展开或折叠时，所述锁定装置解锁，所述前轮支架、后轮支架、侧扶手、推杆组件、第一连杆和第二连杆中的任意一个部件运动，其他部件均被带动一起动作。
进一步的，所述推杆组件包括下部与第一连杆转动连接的下推杆和与下推杆滑动连接的上推杆，所述上推杆能够沿下推杆的长度方向上下滑动。
优选的，所述上推杆和下推杆中一个部件为管件结构，另一个部件插入在所述管件结构的部件内，所述上推杆和下推杆能够相互滑动。
具体的，所述第一连杆的上部与推杆组件的下部转动连接，所述侧扶手的上部与推杆组件转动连接，所述侧扶手在推杆组件上的连接处高于第一连杆在推杆组件上的连接处，所述侧扶手的下部与后轮支架的上部转动连接，所述第一连杆上靠近下端处与后轮支架转动连接，侧扶手在后轮支架上的连接处高于前轮支架在后轮支架上的连接处以及第一连杆在后轮支架上的连接处。
具体的，当侧支架折叠时，所述前轮支架向后转动与后轮支架靠拢，所述推杆组件向前转动与侧扶手靠拢，所述侧扶手向下转动与后轮支架靠拢。
优选的，所述后轮支架包括上后支架和下后支架，所述上后支架的下部与下后支架的上部转动连接，所述前轮支架、第一连杆和侧扶手分别与上后支架转动连接，所述后轮装设在下后支架的下部。
进一步的，所述侧支架具有两种折叠方式，所述侧支架按第一种折叠方式折叠时，所述上后支架和下后支架相对展开锁定，所述上后支架和下后支架一起相对前轮支架、侧扶手、第一连杆转动，折叠后，所述前轮位于后轮的上部；所述侧支架按第二种折叠方式折叠时，所述下后支架与上后支架相互解除锁定，所述下后支架绕与上后支架的连接处向上转动翻折与上后支架靠拢，所述上后支架和下后支架一起相对前轮支架、侧扶手、第一连杆转动，折叠后，所述前轮位于后轮的下部。
具体的，所述多个连接杆组件包括前轮支架连接杆组件、后轮支架连接杆组件和推杆连接杆组件，所述前轮支架连接杆组件包括与双人推车一侧的前轮支架固定连接的第一外连杆、与双人推车中间的前轮支架固定连接的第一内连杆，所述第一外连杆与第一内连杆转动连接；所述后轮支架连接杆组件包括与双人推车一侧的后轮支架固定连接的第二外连杆和与双人推车中间的后轮支架固定连接的第二内连杆，所述第二外连杆与第二内连杆转动连接；所述推杆连接杆组件包括与双人推车一侧的推杆组件固定连接的第三外连杆和与双人推车中间的推杆组件固定连接的第三内连杆，所述第三外连杆与第三内连杆转动连接，当第一外连杆、第二外连杆和第三外连杆均向靠近 / 远离双人推车的中间侧支架的方向翻转时，位于双人推车两侧的侧支架能够随第一外连杆、第二外连杆和第三外连杆一起向靠近 / 远离双人推车的中间侧支架的方向翻折收拢 / 翻折展开。
具体的，当横支架处于折叠状态时，第一外连杆和第一内连杆转动连接处的转轴轴心线、第二外连杆和第二内连杆转动连接处的转轴轴心线和第三外连杆和第三内连杆转动连接处的转轴轴心线共线或平行。
具体的，所述第一外连杆和 / 或第一内连杆上设置有限制第一外连杆相对第一内连杆在车架展开时单向转动的第一单向转动限位机构；所述第二外连杆和 / 或第二内连杆上设置有限制第二外连杆相对第二内连杆在车架展开时单向转动的第二单向转动限位机构；所述第三外连杆和 / 或第三内连杆上设置有限制第三外连杆相对第三内连杆在车架展开时单向转动的第三单向转动限位机构。
进一步的，所述横支架还包括连杆的连接杆组件，所述连杆的连接杆组件包括与双人推车一侧的第一连杆固定连接的第四外连杆、与双人推车中间的第一连杆固定连接的第四内连杆，所述第四外连杆与第四内连杆转动连接，当横支架处于折叠状态时，第一外连杆和第一内连杆转动连接处的转轴轴心线、第二外连杆和第二内连杆转动连接处的转轴轴心线、第三外连杆和第三内连杆转动连接处的转轴轴心线以及第四外连杆和第四内连杆转动连接处的转轴轴心线共线或平行。
具体的，所述第四外连杆和 / 或第四内连杆上设置有限制第四外连杆相对第四内连杆在车架展开时单向转动的第四单向转动限位机构。
具体的，当所述车架折叠时，所述侧支架沿自身的平面相互靠拢折叠，在所述侧支架折叠后，位于双人推车两侧的侧支架自外连杆与内连杆的转动连接处向车架前侧的内部翻折，当车架折叠后，位于双人推车两侧的侧支架上的前后轮所在平面与双人推车的中间侧支架的前后轮所在的平面相交。
进一步的，相邻的侧支架之间可拆卸地装设有前扶手，所述前扶手呈 U 形杆状，所述前扶手的一端与双人推车一侧的侧扶手相连，另一端与双人推车中间的侧扶手相连。
优选的，所述双人推车还包括固定设置在双人推车中间的侧支架上的拉手，所述拉手位于双人推车中间的侧支架的前轮支架和侧扶手之间。
具体的，所述拉手呈环形，所述拉手的内孔沿双人推车的左右方向延伸。
本发明的范围，并不限于上述技术特征的特定组合而成的技术方案，同时也应涵盖由上述技术特征或其等同特征进行任意组合而形成的其它技术方案。例如上述特征与本申请中公开的具有类似功能的技术特征进行互相替换而形成的技术方案等。
由于上述技术方案运用，本发明与现有技术相比具有下列优点：通过连接杆组件使三个结构相同、并排设置的侧支架能够同步折叠，折叠进程统一；通过转动连接的外连杆和内连杆能够使两侧的侧支架随外连杆的横向翻折一起向中间的侧支架方向翻折收拢，这样，折叠后的双人推车在横向占用的空间缩小，三个侧支架的折叠能够使折叠后的双人推车相对展开状态的双人推车在前后方向以及上下方向的结构尺寸变小，折叠后的双人推车整体占用体积小；侧支架的侧扶手、推杆组件、第一连杆和后轮支架形成的四连杆机构以及前轮支架、后轮支架、第一连杆和第二连杆形成四连杆机构，使侧支架在折叠时，仅需驱动一个部件运动即可实现其他部件的联动，侧支架的折叠动作简单方便。
附图说明
图 1 为本发明双人推车处于展开状态时的立体结构示意图；
图 2 为本发明双人推车处于展开状态时的另一立体结构示意图；
图 3 为本发明双人推车处于展开状态时的侧视图；
图 4 为本发明双人推车的侧支架折叠时的立体结构示意图（下后支架不折叠）；
图 5 为本发明双人推车的侧支架折叠时的侧视图（下后支架不折叠）；
图 6 为本发明双人推车的侧支架折叠完成时的立体结构示意图（下后支架不折叠）；
图 7 为本发明双人推车的侧支架折叠完成时的侧视图（下后支架不折叠）；
图 8 为本发明双人推车处于折叠状态时的正视图（下后支架不折叠）；
图 9 为本发明双人推车处于折叠状态时的立体结构示意图（下后支架不折叠）；
图 10 为本发明双人推车的侧支架折叠时的立体结构示意图（下后支架折叠）；
图 11 为本发明双人推车的侧支架折叠时的侧视图（下后支架折叠）；
图 12 为本发明双人推车的侧支架折叠完成时的立体结构示意图（下后支架折叠）；
图 13 为本发明双人推车的侧支架折叠完成时的侧视图（下后支架折叠）；
图 14 为本发明双人推车处于折叠状态时的正视图（下后支架折叠）；
图 15 为本发明双人推车处于折叠状态时的立体结构示意图（下后支架折叠）；
其中： 1 、前轮支架； 2 、后轮支架； 3 、侧扶手； 4 、第一连杆； 5 、第二连杆； 6 、推杆组件； 7 、前轮； 8 、后轮； 9 、前扶手； 10 、拉手； 21 、上后支架； 22 、下后支架； 61 、上推杆； 62 、下推杆； 100 、侧支架； 200 、横支架； 201 、第一外连杆； 202 、第一内连杆； 203 、第二外连杆； 204 、第二内连杆； 205 、第三外连杆； 206 、第三内连杆； 207 、第四外连杆； 208 、第四内连杆。
具体实施方式
下面对方向的定义中，以使用者和本领域技术人员对双人推车的惯常观察角度和叙述方便而定义，不限定具体的方向，如，左右方向对应于附图 3 中垂直于纸面的方向，上下方向对应于附图 3 中纸面的上下方向，前后方向对应于附图 3 中纸面的左右方向，以靠近位于中间的侧支架的一侧为内，以远离位于中间的侧支架的一侧为外。
如图 1 至图 15 所示，本发明所述的一种双人推车，包括具有展开状态和折叠状态的车架、设置在车架下方前部的前轮 7 、设置在车架下方后部的后轮 8 、用于将车架锁定在展开状态的锁定装置以及设置在车架上的座位（图未示）。所述座位主要由布套构成。
所述车架包括三个侧支架 100 和两个横支架 200 。所述侧支架 100 沿左右方向依次并排设置，相邻的两个侧支架 100 之间通过横支架 200 相互连接。所述横支架 200 包括多个横向设置的连接杆组件。连接杆组件包括与双人推车一侧的侧支架 100 固定连接的外连杆和与双人推车中间的侧支架 100 固定连接的内连杆。外连杆通过转轴可水平转动地连接于内连杆，所述转轴的轴心线沿上下方向延伸。各横支架 200 包括至少两个连接杆组件，且当侧支架 100 完成上下方向和前后方向的折叠后，同一横支架 200 的各外连杆和内连杆的转动连接处在垂直于连接杆组件延伸方向的方向（如附图 6 中的上下方向）上共线。所述外连杆和所述内连杆能够展开和折叠，使左右两侧的侧支架（ 100 ）可随所述外连杆向内转动与中间的侧支架（ 100 ）靠拢或向外转动展开且当三个侧支架（ 100 ）中的任意一个展开或折叠时另外两个侧支架（ 100 ）能够在横支架（ 200 ）的带动下同步展开或折叠。
当横支架 200 展开 / 折叠时，所述连接杆组件的外连杆在与内连杆的转动连接处横向翻折转动，位于双人推车两侧的侧支架 100 随外连杆的转动向远离 / 靠近双人推车的中间侧支架 100 的方向翻折展开 / 收拢，当横支架 200 处于展开状态，所述侧支架 100 能够沿自身所在的侧平面展开和折叠，三个侧支架 100 中的任意一个展开 / 折叠，另外两个侧支架 100 能够在横支架 200 的带动下一起展开 / 折叠。
当所述车架折叠时，所述侧支架 100 首先沿自身的平面 ( 上下方向和前后方向 ) 相互靠拢折叠。在所述侧支架 100 折叠后，位于双人推车两侧的侧支架 100 自外连杆与内连杆的转动连接处向车架前侧的内部翻折实现车架（左右方向）的折叠。当车架折叠后，位于双人推车两侧的侧支架 100 上的前后轮所在平面与双人推车的中间侧支架 100 的前后轮所在的平面相交，在实际使用中，上述的两个相交平面近乎是垂直相交。
本实施例中，所述侧支架 100 包括下部与前轮 7 连接的前轮支架 1 、下部与后轮 8 连接的后轮支架 2 、侧扶手 3 、第一连杆 4 、第二连杆 5 和推杆组件 6 。
所述前轮支架 1 的上部与后轮支架 2 的上部转动连接，所述下推杆 62 通过第一连杆 4 与后轮支架 2 连接。所述第一连杆 4 与下推杆 62 的下部转动连接，所述第一连杆 4 上靠近下端处与后轮支架 2 转动连接。所述侧扶手 3 上部与下推杆 62 转动连接，所述侧扶手 3 在下推杆 62 上的连接处高于第一连杆 4 在下推杆 62 上的连接处。所述侧扶手 3 的下部与后轮支架 2 的上部转动连接。侧扶手 3 在后轮支架 2 上的连接处高于前轮支架 1 在后轮支架 2 上的连接处以及第一连杆 4 在后轮支架 2 上的连接处。所述第二连杆 5 分别与前轮支架 1 和第一连杆 4 的下部转动连接。所述侧扶手 3 、下推杆 62 、第一连杆 4 和后轮支架 2 形成一个四连杆机构。所述前轮支架 1 、后轮支架 2 、第一连杆 4 和第二连杆 5 形成另一个四连杆机构。
所述推杆组件 6 包括下部与第一连杆 4 转动连接的下推杆 62 和与下推杆 62 滑动连接的上推杆 61 ，所述上推杆 61 能够沿下推杆 62 的长度方向上下滑动。所述上推杆 61 和下推杆 62 中一个部件为管件结构，另一个部件插入在所述管件结构的部件内，所述上推杆 61 和下推杆 62 能够相互滑动。本实施例中，所述下推杆 62 为管件结构，所述上推杆 61 自下推杆 62 上部的开口插入在下推杆 62 内，所述上推杆 61 能够相对下推杆 62 上下滑动伸缩。
当侧支架 100 处于展开状态时，前轮支架 1 与后轮支架 2 相互展开支撑，前轮支架 1 通过前轮 7 撑地，后轮支架 2 通过后轮 8 撑地，所述侧扶手 3 和第一连杆 4 分别斜立在后轮支架 2 上，所述推杆组件 6 撑立在侧扶手 3 和第一连杆 4 的上部，所述前轮支架 1 、后轮支架 2 、侧扶手 3 、推杆组件 6 、第一连杆 4 和第二连杆 5 中有且仅有两个相连的部件通过锁定装置相互锁定；当侧支架 100 处于折叠状态，所述锁定装置解锁，所述前轮支架 1 、后轮支架 2 、侧扶手 3 、推杆组件 6 、第一连杆 4 和第二连杆 5 均相互靠拢收折在一起。
本实施例中，所述的多个连接杆组件包括前轮支架连接杆组件、后轮支架连接杆组件和推杆连接杆组件。所述前轮支架连接杆组件包括与双人推车一侧的前轮支架 1 固定连接的第一外连杆 201 、与双人推车中间的前轮支架 1 固定连接的第一内连杆 202 ，所述第一外连杆 201 与第一内连杆 202 转动连接；所述后轮支架连接杆组件包括与双人推车一侧的后轮支架 2 固定连接的第二外连杆 203 和与双人推车中间的后轮支架 2 固定连接的第二内连杆 204 ，所述第二外连杆 203 与第二内连杆 204 转动连接；所述推杆连接杆组件包括与双人推车一侧的推杆组件 6 固定连接的第三外连杆 205 和与双人推车中间的推杆组件 6 固定连接的第三内连杆 206 ，所述第三外连杆 205 与第三内连杆 206 转动连接，当第一外连杆 201 、第二外连杆 203 和第三外连杆 205 均向靠近 / 远离双人推车的中间侧支架 100 的方向翻转时，位于双人推车两侧的侧支架 100 能够随第一外连杆 201 、第二外连杆 203 和第三外连杆 205 一起向靠近 / 远离双人推车的中间侧支架 100 的方向翻折收拢 / 翻折展开。
当横支架 200 处于折叠状态时，第一外连杆 201 和第一内连杆 202 转动连接处的转轴轴心线、第二外连杆 203 和第二内连杆 204 转动连接处的转轴轴心线和第三外连杆 205 和第三内连杆 206 转动连接处的转轴轴心线平行，当然更好的设置是第一外连杆 201 和第一内连杆 202 转动连接处的转轴轴心线、第二外连杆 203 和第二内连杆 204 转动连接处的转轴轴心线和第三外连杆 205 和第三内连杆 206 转动连接处的转轴轴心线共线。这会使得车架折叠后，双人推车两侧的侧支架 100 能够相对横支架 200 更好地靠拢。
为了使车架在展开状态时的结构稳定性较强，所述横支架 200 还包括连杆的连接杆组件，所述连杆的连接杆组件包括与双人推车一侧的第一连杆 4 固定连接的第四外连杆 207 、与双人推车中间的第一连杆 4 固定连接的第四内连杆 208 ，所述第四外连杆 207 与第四内连杆 208 转动连接，当车架处于折叠状态时，第一外连杆 201 和第一内连杆 202 转动连接处的转轴轴心线、第二外连杆 203 和第二内连杆 204 转动连接处的转轴轴心线、第三外连杆 205 和第三内连杆 206 转动连接处的转轴轴心线以及第四外连杆 207 和第四内连杆 208 转动连接处的转轴轴心线共线或平行。
各连接杆组件还包括设置在外连杆和 / 或所述内连杆上的用于使外连杆在折叠时仅能沿一个方向转动的转动限位机构，且当侧支架完成上下方向和前后方向的折叠后，所有的外连杆均仅能转动至内连杆的前方或均仅能转动至内连杆的后方。具体地，所述第一外连杆 201 后侧部和 / 或第一内连杆 202 后侧部上设置有限制第一外连杆 201 相对第一内连杆 202 在车架展开时单向转动的第一单向转动限位机构。所述第二外连杆 203 后侧部和 / 或第二内连杆 204 后侧部上设置有限制第二外连杆 203 相对第二内连杆 204 在车架展开时单向转动的第二单向转动限位机构。所述第三外连杆 205 后侧部和 / 或第三内连杆 206 后侧部上设置有限制第三外连杆 205 相对第三内连杆 206 在车架展开时单向转动的第三单向转动限位机构。所述第四外连杆 207 后侧部和 / 或第四内连杆 208 后侧部上设置有限制第四外连杆 207 相对第四内连杆 208 在车架展开时单向转动的第四单向转动限位机构。前述各单向转动限位机构的具体结构不是本发明的要点，只要是当车架处于展开状态时，以第一单向转动限位机构为例，第一外连杆 201 相对第一内连杆 202 只能朝一个方向转动，而向另一个方向无法转动，被限位限死即可。如在第一内连杆 202 的端部设置凸部，当车架处于展开状态时，第一外连杆 201 抵压在第一内连杆 202 的端部的凸部上。
在本实施例中，相邻的侧支架 100 之间可拆卸地装设有前扶手 9 ，所述前扶手 9 呈 U 形杆状，所述前扶手 9 的一端与双人推车一侧的侧扶手 3 相连，另一端与双人推车中间的侧扶手 3 相连。在车架折叠之前，需要先取下前扶手 9 。
所述后轮支架 2 包括上后支架 21 和下后支架 22 ，所述上后支架 21 的下部与下后支架 22 的上部转动连接，所述前轮支架 1 、第一连杆 4 和侧扶手 3 分别与上后支架 21 转动连接，所述后轮 8 装设在下后支架 22 的下部。
当车架折叠时，所述锁定装置解锁，侧支架 100 先折叠，侧支架 100 折叠完成后横支架 200 再折叠。所述侧支架 100 具有两种折叠方式，所述侧支架 100 按第一种折叠方式折叠时，所述上后支架 21 和下后支架 22 相对展开锁定。所述上推杆 61 向下推杆 62 内滑动收缩，所述前轮支架 1 向后转动与后轮支架 2 靠拢，所述推杆组件 6 向前转动与侧扶手 3 靠拢，所述侧扶手 3 向下转动与后轮支架 2 靠拢。所述前轮支架 1 、后轮支架 2 、侧扶手 3 、推杆组件 6 、第一连杆 4 和第二连杆 5 中的任意一个部件运动，其他部件均被带动一起动作。两个四连杆结构的设置实现了侧支架 100 的各部件的联动，折叠过程简单方便。折叠后，所述前轮 7 位于后轮 8 的上部。侧支架 100 的折叠实现了车架折叠后双人推车在上下和前后方向体积的减小，结构紧凑。
所述侧支架 100 按第二种折叠方式折叠时，所述上后支架 21 和下后支架 22 相互解除锁定，将所述下后支架 22 绕与上后支架 21 的连接处向上转动翻折与上后支架 21 靠拢。所述上推杆 61 向下推杆 62 内滑动收缩，所述前轮支架 1 向后转动与上后支架 21 靠拢，所述推杆组件 6 向前转动与侧扶手 3 靠拢，所述侧扶手 3 向下转动与后轮支架 2 靠拢。所述前轮支架 1 、上后支架 21 、侧扶手 3 、推杆组件 6 、第一连杆 4 和第二连杆 5 中的任意一个部件运动，其他部件均被带动一起动作。折叠后，所述前轮 7 位于后轮 8 的下部。这种折叠方式相较侧支架 100 的第一种折叠方式，折叠后的双人推车体积进一步减小。
选择上述的两种侧支架 100 折叠方式中的一种折叠完侧支架 100 后进行横支架 200 的折叠。第一外连杆 201 、第二外连杆 203 、第三外连杆 205 和第四外连杆 207 一起向靠近双人推车的中间侧支架 100 的方向翻折收拢。两侧的侧支架 100 相对横支架 200 实现 90 °的翻折，向中间的侧支架 100 靠拢，最终完成车架的全部折叠。横支架 200 的折叠实现了车架折叠后在左右方向上体积的减小，结构更加紧凑。
所述双人推车还包括固定设置在双人推车中间的侧支架 100 上的拉手 10 ，所述拉手 10 位于双人推车中间的侧支架 100 的前轮支架 1 和侧扶手 3 之间。所述拉手 10 呈环形，所述拉手 10 的内孔沿双人推车的左右方向延伸。这样，双人推车的车架折叠后，使用者可以扣住拉手 10 处将双人推车拎起，便于携带取放。
如上所述，我们完全按照本发明的宗旨进行了说明，但本发明并非局限于上述实施例和实施方法。相关技术领域的从业者可在本发明的技术思想许可的范围内进行不同的变化及实施。

Claims (17)

  1. 一种双人推车，包括具有展开状态和折叠状态的车架、设置在车架前部下方的前轮（ 7 ）、设置在车架后部下方的后轮（ 8 ）和用于将车架锁定在展开状态的锁定装置，其特征在于：
    所述车架包括三个沿左右方向依次设置的侧支架（ 100 ）和两个横支架（ 200 ），每两个相邻的侧支架（ 100 ）通过一个所述横支架（ 200 ）相互连接，所述横支架（ 200 ）包括至少一个沿左右方向延伸的连接杆组件，所述连接杆组件包括与左或右侧的侧支架（ 100 ）固定连接的外连杆和与中间的侧支架（ 100 ）固定连接的内连杆，所述外连杆可水平转动地连接于所述内连杆而使左右两侧的侧支架（ 100 ）可随所述外连杆向内转动与中间的侧支架（ 100 ）靠拢或向外转动展开且当三个侧支架（ 100 ）中的任意一个展开或折叠时另外两个侧支架（ 100 ）能够在横支架（ 200 ）的带动下同步展开或折叠。
  2. 根据权利要求 1 所述的一种双人推车，其特征在于：所述外连杆通过转轴可转动地连接于所述内连杆，且所述转轴的轴心线沿上下方向延伸。
  3. 根据权利要求 1 所述的一种双人推车，其特征在于：各所述连接杆组件还包括设置在所述外连杆和 / 或所述内连杆上的用于使所述外连杆在折叠时仅能沿一个方向转动的转动限位机构，且当侧支架（ 100 ）完成上下方向和前后方向的折叠后，所有的外连杆均仅能转动至内连杆的前方或均仅能转动至内连杆的后方。
  4. 根据权利要求 1 所述的一种双人推车，其特征在于：各所述横支架（ 200 ）包括至少两个所述连接杆组件，且当侧支架（ 100 ）完成上下方向和前后方向的折叠后，同一横支架（ 200 ）的各外连杆和内连杆的转动连接处在垂直于所述连接杆组件延伸方向的方向上共线。
  5. 根据权利要求 1-4 中任一项所述的一种双人推车，其特征在于：所述侧支架（ 100 ）包括推杆组件（ 6 ）、下部与所述前轮（ 7 ）连接的前轮支架（ 1 ）、下部与所述后轮（ 8 ）连接的后轮支架（ 2 ），
    相邻两个侧支架（ 100 ）的推杆组件（ 6 ）之间连接有一个所述的连接杆组件；
    和 / 或；
    相邻两个侧支架（ 100 ）的前轮支架（ 1 ）之间连接有一个所述的连接杆组件；
    和 / 或；
    相邻两个侧支架（ 100 ）的后轮支架（ 2 ）之间连接有一个所述的连接杆组件。
  6. 根据权利要求 5 所述的一种双人推车，其特征在于：所述侧支架（ 100 ）还包括侧扶手（ 3 ）、第一连杆（ 4 ）、第二连杆（ 5 ），所述前轮支架（ 1 ）的上部与后轮支架（ 2 ）的上部转动连接，所述推杆组件（ 6 ）通过第一连杆（ 4 ）与后轮支架（ 2 ）连接，所述第一连杆（ 4 ）分别与后轮支架（ 2 ）和推杆组件（ 6 ）转动连接，所述侧扶手（ 3 ）分别与后轮支架（ 2 ）和推杆组件（ 6 ）转动连接，所述第二连杆（ 5 ）分别与前轮支架（ 1 ）和第一连杆（ 4 ）转动连接，所述侧扶手（ 3 ）、推杆组件（ 6 ）、第一连杆（ 4 ）和后轮支架（ 2 ）形成一个四连杆机构，所述前轮支架（ 1 ）、后轮支架（ 2 ）、第一连杆（ 4 ）和第二连杆（ 5 ）形成另一个四连杆机构，当侧支架（ 100 ）处于展开状态时，所述前轮支架（ 1 ）、后轮支架（ 2 ）、侧扶手（ 3 ）、推杆组件（ 6 ）、第一连杆（ 4 ）和第二连杆（ 5 ）中有且仅有两个相连的部件通过锁定装置相互锁定；当侧支架（ 100 ）处于折叠状态，所述前轮支架（ 1 ）、后轮支架（ 2 ）、侧扶手（ 3 ）、推杆组件（ 6 ）、第一连杆（ 4 ）和第二连杆（ 5 ）均相互靠拢收折在一起。
  7. 根据权利要求 6 所述的一种双人推车，其特征在于：相邻两个侧支架（ 100 ）的第一连杆（ 4 ）之间还连接有一个所述的连接杆组件。
  8. 根据权利要求 6 所述的一种双人推车，其特征在于：所述第一连杆（ 4 ）的上部与推杆组件（ 6 ）的下部转动连接，所述侧扶手（ 3 ）的上部与推杆组件（ 6 ）转动连接，所述侧扶手（ 3 ）在推杆组件（ 6 ）上的连接处高于第一连杆（ 4 ）在推杆组件（ 6 ）上的连接处，所述侧扶手（ 3 ）的下部与后轮支架（ 2 ）的上部转动连接，所述第一连杆（ 4 ）上靠近下端处与后轮支架（ 2 ）转动连接，侧扶手（ 3 ）在后轮支架（ 2 ）上的连接处高于前轮支架（ 1 ）在后轮支架（ 2 ）上的连接处以及第一连杆（ 4 ）在后轮支架（ 2 ）上的连接处。
  9. 根据权利要求 6 所述的一种双人推车，其特征在于：所述推杆组件（ 6 ）包括下部与第一连杆（ 4 ）转动连接的下推杆（ 62 ）和可沿下推杆（ 62 ）的长度方向滑动地连接于下推杆（ 62 ）的上推杆（ 61 ）。
  10. 根据权利要求 9 所述的一种双人推车，其特征在于：所述上推杆（ 61 ）和下推杆（ 62 ）中的一个部件可滑动地插设在另一个部件内。
  11. 根据权利要求 6 所述的一种双人推车，其特征在于：所述后轮支架（ 2 ）包括上后支架（ 21 ）和下后支架（ 22 ），所述上后支架（ 21 ）的下部与下后支架（ 22 ）的上部转动连接，所述前轮支架（ 1 ）、第一连杆（ 4 ）和侧扶手（ 3 ）分别与上后支架（ 21 ）转动连接，所述后轮（ 8 ）装设在下后支架（ 22 ）的下部；当所述侧支架（ 100 ）折叠后，
    所述上后支架（ 21 ）和下后支架（ 22 ）相对展开并锁定，所述前轮（ 7 ）位于后轮（ 8 ）的上部；
    和 / 或，
    所述下后支架（ 22 ）与上后支架（ 21 ）靠拢，所述前轮（ 7 ）位于后轮（ 8 ）的下部。
  12. 根据权利要求 6 所述的一种双人推车，其特征在于：所述多个连接杆组件包括前轮支架连接杆组件、后轮支架连接杆组件、推杆连接杆组件和连杆的连接杆组件，所述前轮支架连接杆组件包括与左或右侧的前轮支架（ 1 ）固定连接的第一外连杆（ 201 ）、与中间的前轮支架（ 1 ）固定连接的第一内连杆（ 202 ），所述第一外连杆（ 201 ）与第一内连杆（ 202 ）转动连接；所述后轮支架连接杆组件包括与左或右侧的后轮支架（ 2 ）固定连接的第二外连杆（ 203 ）和与中间的后轮支架（ 2 ）固定连接的第二内连杆（ 204 ），所述第二外连杆（ 203 ）与第二内连杆（ 204 ）转动连接；所述推杆连接杆组件包括与左或右侧的推杆组件（ 6 ）固定连接的第三外连杆（ 205 ）和与中间的推杆组件（ 6 ）固定连接的第三内连杆（ 206 ），所述第三外连杆（ 205 ）与第三内连杆（ 206 ）转动连接；所述推杆的连接杆组件与左或右侧的第一连杆（ 4 ）固定连接的第四外连杆（ 207 ）、与中间的第一连杆（ 4 ）固定连接的第四内连杆（ 208 ），所述第四外连杆（ 207 ）与第四内连杆（ 208 ）转动连接。
  13. 根据权利要求 12 所述的一种双人推车，其特征在于：所述第一外连杆（ 201 ）后侧部和 / 或第一内连杆（ 202 ）后侧部上设置有第一转动限位机构；所述第二外连杆（ 203 ）后侧部和 / 或第二内连杆（ 204 ）后侧部上设置有第二转动限位机构；所述第三外连杆（ 205 ）后侧部和 / 或第三内连杆（ 206 ）后侧部上设置有第三转动限位机构；所述第四外连杆（ 207 ）后侧部和 / 或第四内连杆（ 208 ）后侧部上设置有第四转动限位机构。
  14. 根据权利要求 12 所述的一种双人推车，其特征在于：当横支架（ 200 ）处于折叠状态时，第一外连杆（ 201 ）和第一内连杆（ 202 ）转动连接处的转轴轴心线、第二外连杆（ 203 ）和第二内连杆（ 204 ）转动连接处的转轴轴心线、第三外连杆（ 205 ）和第三内连杆（ 206 ）转动连接处的转轴轴心线以及第四外连杆（ 207 ）和第四内连杆（ 208 ）转动连接处的转轴轴心线共线或平行。
  15. 根据权利要求 6 所述的一种双人推车，其特征在于：相邻的侧支架（ 100 ）之间可拆卸地装设有前扶手（ 9 ），所述前扶手（ 9 ）呈 U 形杆状，所述前扶手（ 9 ）的一端与左或右侧的侧扶手（ 3 ）相连，另一端与中间的侧扶手（ 3 ）相连。
  16. 根据权利要求 6 所述的一种双人推车，其特征在于：所述双人推车还包括固定设置在双人推车中间的侧支架（ 100 ）上的拉手（ 10 ），所述拉手（ 10 ）位于双人推车中间的侧支架（ 100 ）的前轮支架（ 1 ）和侧扶手（ 3 ）之间。
  17. 根据权利要求 16 所述的一种双人推车，其特征在于：所述拉手（ 10 ）呈环形。
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